dunno, I just figure if our house uses a little less, its not a bad thing
No it isn't a bad thing-but it probably isn't going to change the world economy either. If 2 million people did all of their cell phone charging in their vehicles it might save enough electricity to power three 60 watt encandescent bulbs each day and result in 7 more traffic fatalities per year.(Yes I pulled those figures out of the air -just like every other pie in the sky fanatic that fails to calculate the unknowable unintended consequences of any sweeping policy change.)